Summer Infant Sippy Stackers encourage your child's independence. The guaranteed spill-proof cups are perfect for little ones at home or on-the-go. The interchangeable lids can be removed, and cups can be stacked for easy storage. The Simple Sip Rim has threads on the inside to provide a smooth surface for drinking when cups are used without lids for older children.
Summer Infant Sippy Stackers encourage your child's independence. The guaranteed spill-proof cups are perfect for little ones at home or on-the-go. The interchangeable lids can be removed, and cups can be stacked for easy st...
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